Saw an aquarium at a local college yesterday that had to have been 8'
deep. It was definitly a salt water aquarium.

I have a question, that I can't seem to find an answer to. How hard
would it be to build such an aquarium? All of the glass thickness
calculators I can find don't seem to handle sizes that large. I just
got done reading someone who used 3/4" lexan and it failed, dumping
out 850+ gallons of water... His tank was 45" deep and very wide...

I'm assuming it would require at minimum 3" thick glass? I plugged in
4' wide, 10' long and 7' deep and it came back to 2095 gallons...

I'm just wondering if this would ever be feasable. Obviously the
ground is an issue, as 2095 gallons of water would weigh 17,462
pounds. Just hope it sinks evenly :-)

The aquarium I saw a the college was most likely 16 or 20' long, not
12. I was wondering about this some time ago, and seeing such a thing
live got me curious again. I'm sure they dropped a good hunk of money
for the thing, the building was funded by a local multi-millionare. I
have no idea how much large peices of glass cost (standard storefront
stuff isn't cheap), then comes the issues of stress, wieght due to
depth, it sinking into the ground, and building a ROV to clean the
thing.

Not sure if such a thing would help or harm the resale value of a
house. I guess if it's 7' high then there has to be some sort of 2nd
story access to the top.

Just curious if anyone has ever run across such a thing in either a
commercial or residential environment. I couldn't find anything via
google related to tanks that large.

Any information or web links appreciated.